Patents Represented by Attorney Miles B. Dearth
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Patent number: 5854361Abstract: The invention relates to a process for preparing soluble and/or meltable phosphorus-modified epoxy resins, which comprises reacting a polyepoxide compound having at least 2 epoxide groups per molecule with carboxyl-containing phosphinic or phosphonic acids.Type: GrantFiled: March 27, 1997Date of Patent: December 29, 1998Assignee: Hoechst AktiengesellschaftInventors: Sebastian Horold, Hans-Peter Schmitz
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Patent number: 5840941Abstract: Process for the preparation of flowable, anhydrous acyloxyalkanesulfonates and their useIn the process of the invention, in the context of the esterification of fatty acids with hydroxyalkanesulfonates, the reaction product (molten mass) at 180.degree. to 250.degree. C. is sheared in such a manner during the cooling to 150.degree. to 50.degree. C. that the mean particle size of the product is <100 .mu.m. The acyloxyalkanesulfonate product thus obtained is still highly flowable, pumpable and the like, even at temperatures in the range from 60.degree. to 100.degree. C. and be stored in the fluid state without change at these temperature even over a long period.Type: GrantFiled: May 8, 1996Date of Patent: November 24, 1998Assignee: Hoechst AktiengesellschaftInventors: Viliam Tittel, Dirk Buhring
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Patent number: 5830973Abstract: The invention relates to a phosphorus-modified epoxy resin having an epoxide value of from 0 to 1.0 mol/100 g, comprising structural units derived from(A) polyepoxide compounds having at least two epoxide groups per molecule and(B) diphosphinic acids,to a process for their preparation and to their use.Type: GrantFiled: March 27, 1997Date of Patent: November 3, 1998Assignee: Hoechst AktiengesellschaftInventors: Sebastian Horold, Hans-Peter Schmitz
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Patent number: 5821288Abstract: A coating composition comprisinga) a film-forming materialb) a stabilizing effective amount of a light stabilizing composition which comprises a blend of at least one diphenyloxamine of the formula ##STR1## where R.sub.1 is hydrogen, alkyl, alkoxy or halogen;R.sub.2 is hydrogen, alkyl, alkoxy, halogen, phenyl or phenoxy; andR.sub.3 and R.sub.4 are hydrogen, alkyl or alkoxy and at least one selected tetraalkylpiperidine.In a preferred embodiment, a benzotriazole is also present in the light stabilizing composition.The coating compositions are especially useful for the automotive market.The invention further relates to a method for enhancing the light stability of coatings comprising adding to the solids content of the coating composition a stabilizing quantity of the above-mentioned light stabilizing composition. The invention also relates to the corresponding stabilized coating film.Type: GrantFiled: June 7, 1996Date of Patent: October 13, 1998Assignee: Clariant Finance (BVI) LimitedInventors: Lajos Avar, Roland Joseph Valin
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Patent number: 5792880Abstract: The present Application relates to a process for the preparation of N-lauroyl-L-glutamic acid di-n-butylamide by reaction of N-lauroyl-L-glutamic acid dimethyl ester with n-butylamine in the presence of a hydrocarbon or hydrocarbon mixture as an auxiliary solvent.Type: GrantFiled: March 13, 1997Date of Patent: August 11, 1998Assignee: Hoechst AktiengesellschaftInventors: Fritz Engelhardt, Manfred Muller, Michael Wessling
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Patent number: 5747556Abstract: Opacified Pearlescent Compounds for Making an elongate louver or assembly of louvers having an improved multi-layer louver configuration comprising an opacified pearlescent outer layer having a claimed range of opacity which substantially or completely occludes an base layer, the increased opacity substantially reduces or eliminates perceptible non-uniformity in coloration, shade change and thickness of the outer layer, while improving resistance to yellowing, processing characteristics, and raw material cost economics.Type: GrantFiled: January 8, 1993Date of Patent: May 5, 1998Assignee: The Geon CompanyInventor: Paul Robert Schwaegerle
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Patent number: 5744237Abstract: In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.Type: GrantFiled: June 10, 1996Date of Patent: April 28, 1998Assignee: Hoechst Celanese CorporationInventor: Harry W. Stanhope
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Patent number: 5679867Abstract: The present invention is directed to a process for the carbonylation of an arylene to an arylaldehyde (e.g., toluene to tolualdehyde) in the presence of a solid acid catalyst. The process for making tolualdehyde comprises carbonylating toluene in the presence of either carbon monoxide or a source of carbon monoxide and in contact with a solid acid catalyst. The reaction is carried out at a temperature ranging from -40.degree. to 200.degree. C., and at a pressure ranging from 20-4000 psig.Type: GrantFiled: March 1, 1996Date of Patent: October 21, 1997Assignee: Hoechst Celanese CorporationInventors: David Alan Bruce, Mario L. Occelli, David Anthony Schiraldi, Dhiraj Sudesh Sood, Cindy Elyse Sullivan, Mark Gilmore White
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Patent number: 5672421Abstract: In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.Type: GrantFiled: August 19, 1996Date of Patent: September 30, 1997Assignee: Hoechst Celanese CorporationInventor: Harry W. Stanhope
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Patent number: 5658655Abstract: In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.Type: GrantFiled: June 10, 1996Date of Patent: August 19, 1997Assignee: Hoechst Celanese CorporationInventor: Harry W. Stanhope
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Patent number: 5647383Abstract: The present invention is directed to a man-made fiber comprising a cellulose ester and 0.05 to 5.0% by weight of a titanium dioxide having an average particle size of less than 100 nanometers.Type: GrantFiled: November 15, 1995Date of Patent: July 15, 1997Assignee: Hoechst Celanese CorporationInventors: Terry A. Brodof, John B. Hopkins, Jr.
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Patent number: 5648529Abstract: The present invention is directed to a process for the recovery of an organic acid. The organic acid is generated from the manufacture of a cellulose ester. The first step of the process is to remove the organic acid from the manufacture of cellulose ester. The acid is in the form of a weak acid stream comprising of the organic acid and water. The weak acid stream is resolved, via a solvent extraction, to form an extractor overhead stream and raffinate stream. The raffinate stream comprises solvent, water, and alcohol. The alcohol is produced in the recovery process by hydrolysis of the solvent after the solvent extraction. The raffinate stream is resolved into a overhead stream and a bottom stream. The overhead stream comprises water, alcohol, and solvent. Excess organic acid is added to the overhead stream to form a feed stream. The feed stream is catalyzed, via ion exchange resins, whereby a portion of the alcohol is esterified to the solvent.Type: GrantFiled: May 16, 1995Date of Patent: July 15, 1997Assignee: Hoechst Celanese CorporationInventors: Stephen C. Jones, Denis G. Fallon
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Patent number: 5635438Abstract: In accordance with the present invention there is provided a method for making and using an improved chromium catalyst which is useful in oxidation of combustible materials such as hydrocarbons, chloro-carbons, chlorohydrocarbons, polymers and other combustible materials. The process for the catalytic oxidation of combustible material, comprises: contacting a combustible material in a heated reaction zone in the presence of oxygen and a chromium impregnated catalyst prepared by impregnating a supporting material with a chromium compound and calcining the solid material at a temperature and for a time at least sufficient for the supporting material to reach a temperature of at least 725.degree. C. By the method the catalyst exhibits reduced loss of chromium to the environment.Type: GrantFiled: June 10, 1994Date of Patent: June 3, 1997Assignee: The Geon CompanyInventors: Joseph A. Cowfer, George H. Young
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Patent number: 5600043Abstract: The subject invention relates to a process for oxychlorination of ethylene to produce 1,2-dichloroethane. The process comprises contacting a mixture of ethylene, oxygen or oxygen containing gas and hydrogen chloride with a fixed or fluidized catalyst composition in a reaction zone and recovering 1,2-dichloroethane from the effluents of the reaction zone.The invention is embodied in a process for the oxychlorination of ethylene to produce 1,2-dichloroethane by contacting a mixture of ethylene, oxygen containing gas and hydrogen chloride with a catalyst composition in a reaction zone and recovering 1,2-dichloroethane from the effluents of the reaction zone the process comprising introducing ethylene, HCl and oxygen containing gas into said reaction zone in a ratio of 1.8 and 2.2 moles of HCl per mole of ethylene and from 0.5 to 1 mole of oxygen per mole of ethylene, the oxychlorination process taking place at a temperature of from 215.degree. C. to 230.degree. C.Type: GrantFiled: March 27, 1995Date of Patent: February 4, 1997Assignee: The Geon CompanyInventors: Victor J. Johnston, Joseph A. Cowfer
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Patent number: 5536462Abstract: A process for the extrusion of rigid PVC profile other than pipe is disclosed in a twin conical screw extruder, equipped with high shear screws. The process includes extruding a compound specially adapted for the process, the compound contains a polyvinyl chloride resin with an average particle size of from 130 to about 200 microns, a lubricant system containing no more than about 3.5 parts of one or more lubricants, an organo metal salt, from 0 to less than 0.75 parts of a polymeric processing aid, at least one filler/pigment, and a stabilizer for PVC. The process achieves extrudate surfaces characterized by a smooth, dull finish. The process advantageously operates at high extrusion output rates under the conditions specified.Type: GrantFiled: July 22, 1994Date of Patent: July 16, 1996Assignee: The Geon CompanyInventor: Roman B. Hawrylko
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Patent number: 5507999Abstract: The method of molding a refrigerator door by preheating a pair of plastic sheets and thence placing the first sheet and the second sheet on a lower female mold and on a plug assist female mold, respectively. The preheated sheet in the lower mold has a full vacuum drawn thereon to mold such first sheet into the final form of the front door panel. A partial vacuum is drawn on the second sheet to partially form the plastic sheet into the configuration of the final form of the inner door panel and thence the preformed second sheet is transferred to an upper male mold by drawing a full vacuum on the upper mold to effect such transfer and molding to a finished inner door configuration. The two panels thence have their outer perimeters fusion bonded to form a closed chamber that is filled with foam insulation after cooling of the formed and joined door panels.Type: GrantFiled: April 15, 1994Date of Patent: April 16, 1996Assignee: The Geon CompanyInventors: Clive J. Copsey, Gerard J. Barthelemy, Martin T. Chernock
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Patent number: 5496630Abstract: Multilayered extruded thermoplastic profiles are disclosed. The profiles are useful for decorative extruded louvers exhibiting a polished metal-look. The metal-look is achieved by the use of a limited amount of powdered aluminum metal having particle size of 50 microns or less, combined with an effective amount of nacreous pigment. The invention provides a multi-layer extrudate having the appearance of polished metal in the appearance layer in combination with an opaque or clear base layer. The preferred embodiment is a co-extruded polyvinyl chloride.Preferably, the appearance layer comprises 100 weight parts of rigid polyvinyl chloride as the thermoplastic matrix, a combination of from 0.05 to about 4 parts by weight of aluminum particles having an average particle size of from 10-40 microns, from 0.1 to 5 weight parts of titanium dioxide coated mica pigment or colored version thereof, and optional organic or inorganic coloring pigment(s).Type: GrantFiled: September 13, 1993Date of Patent: March 5, 1996Assignee: The Geon CompanyInventors: Roman B. Hawrylko, Karl Lakstigala, Aslim A. Asgaralli
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Patent number: 5494718Abstract: A shaped rigid thermoplastic cradle and leveler for vessels such as sanitaryware is disclosed. The cradle and leveler are separately formed or integrally shaped from a single thermoformed sheet of rigid thermoplastic material. The rigid thermoplastic material has a flexural modulus of at least about 300,000 psi to provide sufficient rigidity in the sidewall of the cradle. The leveler includes an integral floor leveling means for providing a designed pitch so as to conform to the desired pitch of the floor region of the vessel toward the drain hole. The floor region comprises a plurality of tapering, alternating upper and lower contacting regions. Between each adjacent upper contacting region is defined unsupported span regions having the shortest distance between adjacent upper contact regions of not more than 12 inches (30.5 cm). Preferably the shortest distance between adjacent upper contact regions defining the unsupported span is from 2.5 inches to about 6 inches.Type: GrantFiled: January 18, 1994Date of Patent: February 27, 1996Assignee: The Geon CompanyInventors: Susan K. Adams, M. Timothy Chernock, Martin Warchola, Martin E. Woods
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Patent number: 5478882Abstract: Compositions, composite articles and process for producing same are provided from a reinforced polyvinyl halide composition (A) comprising a high molecular weight polyvinyl halide resin, a plasticizer, and a reinforcement material, such as glass fibers, in combination with (B) a composition having adhesion to (A). Preferably (B) comprises a thermoplastic compound selected from the group consisting of PVC, plasticized PVC, styrene derivatives, urethane derivatives, acrylic derivatives, acrylonitrile derivatives, polyester derivatives, and mixtures thereof, with the most preferred composition being an unreinforced, plasticized polyvinyl halide composition. The composition article exhibits good strength, low sag at high use temperatures, and lowered coefficient of thermal expansion for use in contact with metal or polymeric substrates such as panels.Type: GrantFiled: May 9, 1994Date of Patent: December 26, 1995Assignee: The Geon CompanyInventors: James W. Summers, Jerome J. Blayne, Bryan M. Kazmer
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Patent number: 5455319Abstract: The present invention to a method of synthesizing poly(vinyl halide) by means of a free radical polymerization which mimics a "living" radical polymerization in the presence of an iodine containing chain transfer agent containing at least one iodine atom bonded to a primary carbon atom and having the formula:R--CH.sub.2 I (I)R--CHX I (II),R--CH(X)--CH.sub.2 I (III),R--CH(X)--CHX I (IV), orR--CH(X)--CH.sub.2 --CHX I (V),wherein X is fluorine, chlorine, bromine, or iodine, R is hydrogen, C.sub.1, C.sub.2, C.sub.3, C.sub.4, C.sub.5 alkyl, any of which are linear or branched, cyanoalkyl, cyclohexyl, methyl cyclohexyl, phenyl, benzyl, and halogenated or oxygenated derivatives thereof.In accordance with the invention there is further provided a method of synthesizing 1-halo-1-iodoethane by reacting hydrogen iodide with vinyl chloride or vinyl fluoride in the presence of an iodine generating catalyst under certain specified conditions.Type: GrantFiled: June 30, 1994Date of Patent: October 3, 1995Assignee: The Geon CompanyInventors: Philip I. Bak, Gregory P. Bidinger, Ross J. Cozens, Paul R. Klich, Lance A. Mayer